Yesterday's crash, that is.

SFMTA director Nathaniel Ford expressed deep sadness and frustration over yesterday's F-Market Muni crash, which injured 6 people and follows July's Muni train crash in West Portal, saying in a statement, "This accident was intolerable and deeply frustrating, I know that the riding public is concerned about Muni safety, and so am I. Our ongoing work to improve Muni safety is clearly more urgent than ever."

Supervisor Bevan Dufty was confused, and rightfully so. He told KRON 4, "my understanding form being at the scene last night, you're supposed to have space between streetcars."

"This accident was avoidable," said Dufty tells SF Chronicle. "Muni procedures require a minimum of one block spacing between street cars. I can't imagine any excuse. We're past the point of talking about improving safety on Muni. Improvements need to be seen. It's totally unacceptable."

Check out more Muni crash images here and here.